"English" words being returned that are not English words

At times, LibreTranslate fails at its mission in curious ways, and among them is when it returns English words as translations that are not, in fact, English words at all. One example of this (for brevity) is the Russian word “ книппель ”, which the Google Translate Mobile App correctly translates as “ bar shot ” (i.e., such as would be fired from a cannon): But LibreTranslate returns “ nickel ”. The mistranslation aside, of salient note are the alternatives that are returned above.